Governor.



, Patented Feb. 26, I90I. C. E. DAWSON.

G 0 V E R N 0 B. (Application Bled. Dec. 4, 1900.)

(No lodal.)

CHARLES ERNEST DAWSON, OF CHISWICK, ENGLAND.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 668,955, dated February26, 1901.

Applicatiml filed December 4, 1900. Serial No. 38,684. (No model.)

To all 'Ll/'horn zt 'may concern:

Be it known that I, CHARLES ERNEST DAW- SON, a subject ot' the Queen ofGreat Britain and lreland,and a resident of Hogarth Vorks, Chiswick, inthe county of Middlesex, England, have invented certain new and usefulImprovements in Governors for Internal Combustion Engines, (for which Ihave made application for Letters Patent in Great Britain, No. 22,636,dated November 13, 1899,) of which the following is a specification.

My invention relates to improvements in governors for engines. j

The object of my invention is to provide a governing device which shallregulate the supply of combustible fluid in proportion to the speed ofthe engine.

My invention consists in a governor which is constructed of a number ofsector-shaped blocks forming together in their closed position a ringand adapted to slide between a pair of guiding-disks. The movement otthe blocks is controlled by means of a spring which embraces pinsattached to one side of the blocks. The sectors are arranged to actagainst an abutment formed by a sliding rod actuating a throttle-valveor other suitable governing device.

In the accompanying drawings, Figures 1 and 2 are respectively end andsectional elevations of the governing device.

This governor is composed 0f a number of sector-shaped blocks 19,forming a complete ring when in their closed position. These blocks aresituated between two guiding-disks 20, which are joined together by aboss or sleeve 21, keyed to the governor-shaft 22, which is driven at asuitable speed by gearing from the main shaft of the engine, or, ifdesired, the sleeve 2l may be secured directly to the crankshaft,whereby gearing is avoided. Each of the blocks 19 is pivoted at one ofits outermost corners on a pin or pivot 23, secured to the disk 20, andhas a pin 24 attached to one side and projecting through one of theguide-disks and free to move in a curved radial slot 25. Passing aroundthe outside of the pins 24 is an endless spiral spring which normallyholds the blocks in a closed position. As the governor-shaft 22 revolvesthe blocks tend to ['ly out against the restraining-spring, and when thespeed exceeds a predetermined maximum, dependent upon the strength ofthe said spring, the blocks come into contact with the' curved plate 27,attached to the extremity of the rod 28, which may be in directcommunication with a throttle-valve upon the inlet for combustible duidof the engine or with any of the well-known devices whereby the chargeentering the cylinder may be regulated. When the rod 28 is horizontallyarranged, I provide it with a spring to return it after governing hastaken place. This or a similar spring may be used in a vertically orhorizontally arranged governor as a means for adjustment.

I find that a governor of the type above described is extremelysensitive in its action and is exceedingly effective in governing aninternal-combustion engine which is subject to sudden speed variations.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In internal-combustion engines, a governing device comprising, a numberot' sectorshaped blocks between two guide-disks; said blocks beingpivoted at their outermost corners and provided with pins projectingthrough curved radial slots in one of the disks, and an endless springembracing said pins substantially as described.

In witness whereof I have hereunto set my hand, this 2d day of November,1900,. in presence of two witnesses.

CHARLES ERNEST DAWSON.

Witnesses:

GEO. H. WELCH, GEO. FAGAN.

